My boat came with a ZX700.5 amp in it. I am adding a 750.1 for my L7, and I want to keep the 5 channel amp for cabin and tower speakers. Can I run my polk 6.5 off of four channels and the 6.5 HLCD's off of the sub channel? All speakers are 4 ohm.

That's is what I thought. Looks like I will be selling that amp and getting something else. That sucks! Something else I didn't plan on buying!! BOAT (Break Out Another Thousand), but I can't go without it!!! Thanks Mike.